| 单词 | but-2-yne |
| 释义 | > as lemmasbut-2-yne The two alkynes are 1-butyne or but-1-yne (CH≡CCH2CH3) and 2-butyne or but-2-yne (CH3C≡CCH3C); both are gases at room temperature. The other two isomers are buta-1-3-diene (CH2=CHCH=CH2) and buta-1-2-diene (CH2=C=CHCH3). These are no longer referred to as butynes.extracted from butynen.< as lemmas |
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